Best amp for my JJ Electronics 243 pre amp?

System includes Rega cd player,Thorens table and a pair of Castle Howard mk 2,yes very old but I like them for now,basic MIT speaker cables,Iam not intersted in expensive high end cables not worth the money.Iam looking to replace my old HK Citation 16s,would prefer tube but would consider non tube if the improvement is worth it.Looking to spend 1k to 2k used or new.Music includes pop,rock,jazz,classical.